Home / 1,442,194,875.89-1,990,228,928.33-782,145,153.89

Finding the Fourth Proportional to 1,442,194,875.89, 1,990,228,928.33 and 782,145,153.89

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Solution

The fourth proportional to 1,442,194,875.89, 1,990,228,928.33 and 782,145,153.89 is: 1,079,360,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,194,875.89 : 1,990,228,928.33 = 782,145,153.89 : x
  2. Step 2: Convert to fraction form
    1,442,194,875.89/1,990,228,928.33 = 782,145,153.89/x
  3. Step 3: Cross multiply
    1,442,194,875.89x = 1,990,228,928.33 × 782,145,153.89
  4. Step 4: Simplify right side
    1,442,194,875.89x = 1,556,647,911,417,001,728
  5. Step 5: Solve for x
    x = 1,556,647,911,417,001,728/1,442,194,875.89
  6. Step 6: Final answer
    x = 1,079,360,312.15

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Double scale
Find fourth proportional to 1,442,194,876.89, 1,990,228,929.71 and 782,145,154.89
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.